Description

In our proposed a flexible D-STATCOM (Distribution Static Compensator) and its new controller system, that be able to mitigate faults, and improve the distribution system performance. The performance of D-STATCOM system to mitigate the power quality problem of voltage sags and improve the distribution system performance under all types of system related disturbances and system unbalanced faults, balanced faults. A 12-Pulse converter based STATCOM was used to mitigate the voltage sag with respect to the harmonic problem. A multilevel converter has several advantages over a conventional 12-pulse converter such a Staircase waveform quality, Common-mode (CM) voltage, Input current and harmonic control. Multi-level based D-STATCOM configuration with IGBT is designed and the graphic models of the D-STATCOM is developed using the MATLAB/SIMULINK